Water Treatment Systems Backwash


A separate leaching system should be installed for the backwash of water treatment systems per Section X of the 2018 Technical Standards for Subsurface Sewage Disposal Systems.

Among the items required to dispose of backwash water are:

  1. A completed and approved Application for Approval to Construct a Water Treatment Wastewater Disposal System along with a $125 application fee.
  2. The type, name and model number of the water treatment device and its anticipated WTW discharge volume per cycle and frequency.
  3. The system shall have a minimum storage volume of 1.5 times of either the anticipated discharge per cycle or daily average, whichever is greater.
  4. Use acceptable pipes and materials for subsurface sewage disposal systems in accordance with the State of Connecticut Public Health Code Section 19-13-B103.
  5. Bottom of system shall be a minimum of 24 inches above ledge and 12 inches above the seasonal high groundwater table at treatment system site.   If source water requires treatment for pathogen removal then the separation distance shall be increased to 24 inches above seasonal high groundwater.
  6. No portion of the system shall be located within 10 feet of septic system.
  7. System shall be installed at least 75 feet from potable water supply well.
  8. The installer shall provide 24 hour minimum notice to the Glastonbury Health Department prior to commencement of installation.
  9. An inspection of the system by our office is required.

Refer to Section X of the 2018 Technical Standards for more information and specific requirements.

Note:  Water treatment wastewater from a calcite filter, granular activated carbon filter, or a point of use reverse osmosis unit may be discharged to a subsurface sewage disposal system provided the requirements in Appendix E of the Technical Standards are met.